Climate change and energy shortages are set to become the greatest challenges for humanity in the 21st century. While a few reports have given some indication about what can be done to get to get to grips with these problems, very little has been written about how the necessary changes can be brought about. This book is all about how the key steps needed to make the crucial transition can happen. The latest climate research indicates that the challenge facing us is not just the reduction of our annual global emissions of greenhouse gases, but of their actual concentrations in the atmosphere. After years of inaction, urgent and comprehensive action is now needed to turn an existential crisis for humanity today into an opportunity to secure the well-being and prosperity of present and future generations. This book shows how we can: accelerate the renewable energy revolution, renew our local economies and our urban habitat, renew the living systems of planet earth, and renew and invigorate international cooperation.